4fff584a68
The primary change that underlies all this is in the OOB. Specifically, the problem in the code until now has been that the OOB attempts to resolve an address when we call the "send" to an unknown recipient. The OOB would then wait forever if that recipient never actually started (and hence, never reported back its OOB contact info). In the case of an orted that failed to start, we would correctly detect that the orted hadn't started, but then we would attempt to order all orteds (including the one that failed to start) to die. This would cause the OOB to "hang" the system. Unfortunately, revising how the OOB resolves addresses introduced a number of additional problems. Specifically, and most troublesome, was the fact that comm_spawn involved the immediate transmission of the rendezvous point from parent-to-child after the child was spawned. The current code used the OOB address resolution as a "barrier" - basically, the parent would attempt to send the info to the child, and then "hold" there until the child's contact info had arrived (meaning the child had started) and the send could be completed. Note that this also caused comm_spawn to "hang" the entire system if the child never started... The app-failed-to-start helped improve that behavior - this code provides additional relief. With this change, the OOB will return an ADDRESSEE_UNKNOWN error if you attempt to send to a recipient whose contact info isn't already in the OOB's hash tables. To resolve comm_spawn issues, we also now force the cross-sharing of connection info between parent and child jobs during spawn. Finally, to aid in setting triggers to the right values, we introduce the "arith" API for the GPR. This function allows you to atomically change the value in a registry location (either divide, multiply, add, or subtract) by the provided operand. It is equivalent to first fetching the value using a "get", then modifying it, and then putting the result back into the registry via a "put". This commit was SVN r14711.
118 строки
3.6 KiB
C
118 строки
3.6 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_RML_CNOS_H
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#define MCA_RML_CNOS_H
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#include "orte/mca/rml/rml.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C"
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{
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#endif
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ORTE_DECLSPEC extern orte_rml_component_t mca_rml_cnos_component;
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int orte_rml_cnos_open(void);
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int orte_rml_cnos_close(void);
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orte_rml_module_t * orte_rml_cnos_init(int *priority);
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int orte_rml_cnos_module_init(void);
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int orte_rml_cnos_module_fini(void);
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char *orte_rml_cnos_get_uri(void);
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int orte_rml_cnos_set_uri(const char *);
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int orte_rml_cnos_parse_uris(const char *uri,
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orte_process_name_t * peer, char ***uris);
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int orte_rml_cnos_ping(const char *uri, const struct timeval *tv);
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int orte_rml_cnos_send(orte_process_name_t * peer,
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struct iovec *msg,
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int count, int tag, int flags);
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int orte_rml_cnos_send_buffer(orte_process_name_t * peer,
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orte_buffer_t * buffer,
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orte_rml_tag_t tag, int flags);
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int orte_rml_cnos_send_nb(orte_process_name_t * peer,
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struct iovec *msg,
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int count,
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orte_rml_tag_t tag,
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int flags,
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orte_rml_callback_fn_t cbfunc, void *cbdata);
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int orte_rml_cnos_send_buffer_nb(orte_process_name_t * peer,
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orte_buffer_t * buffer,
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orte_rml_tag_t tag,
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int flags,
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orte_rml_buffer_callback_fn_t cbfunc,
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void *cbdata);
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int orte_rml_cnos_recv(orte_process_name_t * peer,
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struct iovec *msg,
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int count, orte_rml_tag_t tag, int flags);
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int orte_rml_cnos_recv_buffer(orte_process_name_t * peer,
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orte_buffer_t * buf, orte_rml_tag_t tag);
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int orte_rml_cnos_recv_nb(orte_process_name_t * peer,
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struct iovec *msg,
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int count,
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orte_rml_tag_t tag,
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int flags,
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orte_rml_callback_fn_t cbfunc, void *cbdata);
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int orte_rml_cnos_recv_buffer_nb(orte_process_name_t * peer,
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orte_rml_tag_t tag,
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int flags,
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orte_rml_buffer_callback_fn_t cbfunc,
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void *cbdata);
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int orte_rml_cnos_recv_cancel(orte_process_name_t * peer,
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orte_rml_tag_t tag);
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int orte_rml_cnos_xcast(orte_jobid_t job,
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orte_buffer_t *buffer,
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orte_rml_tag_t tag);
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int orte_rml_cnos_xcast_nb(orte_jobid_t job,
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orte_buffer_t *buffer,
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orte_rml_tag_t tag);
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int orte_rml_cnos_xcast_gate(orte_gpr_trigger_cb_fn_t cbfunc);
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int orte_rml_cnos_barrier(void);
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int orte_rml_cnos_register_contact_info(void);
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int orte_rml_cnos_register_subscription(orte_jobid_t job, char *trigger);
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int orte_rml_cnos_get_contact_info(orte_process_name_t *name, orte_gpr_notify_data_t **data);
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void orte_rml_cnos_update_contact_info(orte_gpr_notify_data_t* data,
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void* cbdata);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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